How do u measure a fish's volume?

Question

besides using displacement?

Answer 1

Integrating will be more costly (in time) and more difficult. So stick with physics!

(if the fish can balance in the water (without moving) you may assume its (total) density is almost 1 g/mlt. But this will give you just an approximate value of its volume while in the water.

If your fish is a shark, forget it!

Answer 2

Density = volume divided by mass, so do some algebraic maneuvering. You get; mass times density equals volume. You need the average density of a fish.

Answer 3

damn. i was gonna say displacement :p